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NET cannot find a solution to a namespace

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Author: User
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NET cannot find a solution to a namespace

<%@ Page language= "C #" src= "Parent.aspx.cs" autoeventwireup= "false" inherits= "Test.parent"%>
<%@ Register tagprefix= "subpage" tagname= "mysub" src= "Subpage.ascx"%>
<! DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 transitional//en" >
<HTML>
<HEAD>
<title>parent</title>
<meta name= "generator" content= "Microsoft Visual Studio. NET 7.1" >
<meta name= "Code_language" content= "C #" >
<meta name= "vs_defaultClientScript" content= "JavaScript" >
<meta name= "vs_targetschema" content= "http://schemas.microsoft.com/intellisense/ie5" >
</HEAD>
<body>
<form id= "Form1" method= "POST" runat= "Server" >
<P>
<subpage:mysub id= "Top" runat= "Server" ></subpage:mysub></P>
<P>
<asp:textbox id= "Parenttext" runat= "Server" > Parent page text box </asp:TextBox>
<asp:button id= "Parentbutton" runat= "Server" text= "parent page button" ></asp:Button></P>
</form>
</body>
</HTML>

//File Parent.aspx.cs code as follows:
Using System;
Using System.Collections;
Using System.ComponentModel;
Using System.Data;
Using System.Drawing;
Using System.Web;
Using System.Web.SessionState;
Using System.Web.UI;
Using System.Web.UI.WebControls;
Using System.Web.UI.HtmlControls;
Namespace test
{
<summary>
Parent's summary description.
</summary>
public class Parent:System.Web.UI.Page
{
Public System.Web.UI.WebControls.TextBox Parenttext;
protected System.Web.UI.WebControls.Button Parentbutton;
private void Page_Load (object sender, System.EventArgs e)
{
Place user code here to initialize page
}
Code generated #region the Web forms Designer
Override protected void OnInit (EventArgs e)
{
//
CodeGen: This call is required for the ASP.net Web forms Designer.
//
InitializeComponent ();
Base. OnInit (e);
}
<summary>
Designer supports required methods-do not use the Code editor to modify
The contents of this method.
</summary>
private void InitializeComponent ()
{
This.parentButton.Click + = new System.EventHandler (This.parentbutton_click);
This. Load + = new System.EventHandler (this. Page_Load);
}
#endregion
private void Parentbutton_click (object sender, System.EventArgs e)
{
This.parentText.Text = "Parent page click Changed";
((subpage) this. FindControl ("Top")). Subtext.text = "Parent page click Changed";
}
}
}

//File Subpage.ascx code as follows:
<%@ control language= "C #" autoeventwireup= "false" src= "Subpage.ascx.cs"inherits= "Test.subpage"Targetschema= "Http://schemas.microsoft.com/intellisense/ie5"%>
<font face= "Song Body" >
<asp:textbox id= "Subtext" runat= "Server" > Custom control text Box </asp:TextBox>
<asp:button id= "Button1" runat= "Server" text= "Custom control button" ></asp:Button></FONT>

//File Subpage.ascx.cs code as follows

Namespace test
{
Using System;
Using System.Data;
Using System.Drawing;
Using System.Web;
Using System.Web.UI.WebControls;
Using System.Web.UI.HtmlControls;
<summary>
Summary description of the subpage.
</summary>
Public class Subpage:System.Web.UI.UserControl
{
protected System.Web.UI.WebControls.Button Button1;
public System.Web.UI.WebControls.TextBox subtext;
private void Page_Load (object sender, System.EventArgs e)
{
if (!this. IsPostBack)
{}
}
Code generated #region the Web forms Designer
Override protected void OnInit (EventArgs e)
{
//
CodeGen: This call is required for the ASP.net Web forms Designer.
//
InitializeComponent ();
Base. OnInit (e);
}
<summary>
Designer supports the desired method-do not use the Code Editor
Modify the contents of this method.
</summary>
private void InitializeComponent ()
{
This. Button1.Click + = new System.EventHandler (this. Button1_Click);
This. Load + = new System.EventHandler (this. Page_Load);
}
#endregion
private void Button1_Click (object sender, System.EventArgs e)
{
This.subText.Text = "This is clicked by the child control button." ";
((TextBox) this. Parent.findcontrol ("Parenttext")). Text = "This is clicked by the child control button. ";
}
}
}

Using System;
Using System.Collections;
Using System.ComponentModel;
Using System.Data;
Using System.Drawing;
Using System.Web;
Using System.Web.SessionState;
Using System.Web.UI;
Using System.Web.UI.WebControls;
Using System.Web.UI.HtmlControls;
How can you not see the space that quotes you

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